title: Protozoal encephalomyelitis in horses: 82 cases (1972-1986).
abstract: Medical records of 82 horses with clinical signs of neurologic disease and histologic lesions suggestive of protozoal encephalomyelitis were reviewed. The presence of a protozoan parasite in the CNS was not influenced by prior treatment of the horse with corticosteroids. Prior treatment of horses with trimethoprim-sulfonamide alone or in combination with pyrimethamine resulted in a decreased number of horses in which a protozoan parasite was detected in the CNS at necropsy. The mean age of affected horses was 3.62 +/- 2.78 years, with male and Standardbred horses being overrepresented, compared with that of the hospital population of horses that were studied at the same time.
authors.affiliation: Department of Clinical Studies, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Kennett Square 19348.
authors.forename: M G
authors.initials: MG
authors.lastname: Boy
authors.forename: D T
authors.initials: DT
authors.lastname: Galligan
authors.forename: T J
authors.initials: TJ
authors.lastname: Divers
mesh_terms: D000367:Age Factors; D000818:Animals; D001947:Breeding; D004679:Encephalomyelitis / Q000209:etiology / Q000662:veterinary*; D005260:Female; D006734:Horse Diseases; D006736:Horses; D008297:Male; D011529:Protozoan Infections, Animal; D012189:Retrospective Studies; D012737:Sex Factors